Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6cd2902d3fcf129…

MALICIOUS

PDF

46.6 KB Created: 2020-08-08 06:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f8918bbc49e72227f4efe03438ef900 SHA-1: 4153b6309bf372cdb29b0451aef92dafaae1485e SHA-256: e6cd2902d3fcf12926ad354201f9a21223a0d1fbc0fd237ea00f20158733709f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=o+mosteiro+agustina+bessa+luis+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link farm or SEO poisoning attack pattern, designed to attract traffic and potentially distribute malware. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=o+mosteiro+agustina+bessa+luis+pdf
    • http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.pdf
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.pdf
    • http://files.chrismok.com/uploads/1/3/2/7/132710621/begedavotolala.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78992801071.pdf
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/novoferawezuvopeku.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/97916565466.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/jasotudagat.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/naleg.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/75019128457.pdf
    • https://cdn.shopify.com/s/files/1/0433/0553/3604/files/65227953542.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/vinayaka_vratha_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0449/4213/1355/files/icse_class_9_biology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/kujuved.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/nijepixibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072af.bin
9aad8bd196feb2e6611c6eddf8f148b51039ef014c2be4b30aa4ce15b90114c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 5528 bytes
font_01_sfnt_off00008559.bin
8a5626d5574113887af94a7d61048e8b4807519f2075acea8f6a5d953eea4cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8559 12740 bytes

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